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Caterpillar 303.5 Excavator Parts | Aftermarket New, Used and Rebuilt

Caterpillar 303.5 Excavator Parts

New Aftermarket, Used and Rebuilt 303.5 Parts

Looking for Caterpillar 303.5 Excavator parts? You've come to the right place. We sell a wide range of new aftermarket, used and rebuilt 303.5 replacement parts to get your machine back up and running quickly. Give us a call, submit an online quote request or select a category below to browse/select a part.


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1-800-255-6253
303.5 Adapter

Adapter

  • Part #: 119-3205
  • Weight: 3.40
  • Fits Machine(s): 303.5, 426B, 424D, 426C, 428C, 442D, 436C, 434E, 432D, 428D, 438C, 436B, 432E, 428E, 428B, 416D, 422E, 420D, 416C, 416B, 308E, 305E, 305C CR, 305.5E, 304E, 304D CR, 304C CR, 303E CR, 303.5D, 303.5E
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303.5 Alternator

Alternator

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Alternator 12v Volts / 55a Amps, Fits Engine Model: 3013c, 3014

Alternator 12v Volts / 55a Amps, Fits Engine Model: 3013c, 3014

  • Part #: 1449952
  • Weight: 8.40
  • Fits Machine(s): 301.5, 902, 304.5, 303.5, 302.5, 216
  • Category(s): Engines & Engine Parts
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303.5 Arm Rest

Arm Rest

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Arm/Crowd/Dipper Cylinder

Arm/Crowd/Dipper Cylinder

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Arm/Crowd/Dipper Cylinder Seal Kit

Arm/Crowd/Dipper Cylinder Seal Kit

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Back Cushion

Back Cushion

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Bearing Kit

Bearing Kit

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Bearing Kit-main

Bearing Kit-main

  • Part #: 1566977
  • Weight: 0.44
  • Fits Machine(s): 302.5, CC24B, CB32B, CB24B, CB22B, CB-34, CB-335D, CB-334E, CB-334D, CB-22, CB-214E, CB-214D, 303.5
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303.5 Bearing Kit-rod Std

Bearing Kit-rod Std

  • Part #: 1566978
  • Weight: 0.30
  • Fits Machine(s): 302.5, CC24B, CB32B, CB24B, CB22B, CB-34, CB-335D, CB-334E, CB-334D, CB-22, CB-214E, CB-214D, 303.5
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303.5 Bearings

Bearings

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Bell Housing

Bell Housing

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Boom

Boom

  • Fits Machine(s): 303.5
  • Category(s): Booms & Stick Components
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303.5 Boom Cylinder

Boom Cylinder

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Boom Cylinder Seal Kit

Boom Cylinder Seal Kit

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Bottom Roller

Bottom Roller

  • Part #: 185-7280
  • Weight: 13.90
  • Fits Machine(s): 302.5, 303.5
  • Category(s): Undercarriages
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303.5 Bucket Cylinder

Bucket Cylinder

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Bucket Cylinder Seal Kit

Bucket Cylinder Seal Kit

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Bucket Link

Bucket Link

  • Fits Machine(s): 303.5
  • Category(s): Booms & Stick Components
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303.5 Bushing

Bushing

  • Part #: 2944916
  • Weight: 0.20
  • Fits Machine(s): 216, C2.2, CB-214D, CB-214E, CB-335, CB-334E, CB-22, CB-334D, C1.5, C1.1, 304.5, 303.5, 257B, 247B3, 247B, 232B, 226B3, 226B, 242B, 216B, 216B3
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303.5 Bushing-rod

Bushing-rod

  • Part #: 1540869
  • Weight: 0.10
  • Fits Machine(s): 216B, C1.1, C1.5, C2.2, CB-334E, CB-22, CB-334D, CB-214D, CB-214E, 902, 304.5, 303.5, 302.5, 257B, 247B3, 247B, 242B, 232B, 226B3, 226B, 216B3, 216
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303.5 Bushings

Bushings

  • Fits Machine(s): 303.5
  • Category(s): Booms & Stick Components
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303.5 Cab Door

Cab Door

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Cab Glass

Cab Glass

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Cab Hatch

Cab Hatch

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Cab Seat

Cab Seat

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Cab Shell

Cab Shell

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Cat Air Filter

Cat Air Filter

  • Part #: 6I2499
  • Weight: 4.35
  • Fits Machine(s): 301.5, CB-214E, CB-22, CB-334D, CB-335D, CB32B, CB22B, CC24B, CB24B, CB-34, CB-334E, CB-214D, 305D CR, 901C, 305, 304D CR, 304C CR, 304.5, 304, 303E CR, 303C CR, 303.5D, 303.5C, 303.5, 302.5, 303
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303.5 Cat Fuel Filter

Cat Fuel Filter

  • Part #: 156-1200
  • Weight: 1.00
  • Fits Machine(s): 216, 303.5, 302.7D, 304C CR, 304, 303C CR, 304.5, 303E CR, 303.5E, 303.5C, 302.5C, 302.5, 302.4D, 301.7D CR, 302.2D, 301.7D, 301.6C, 301.5, 257B, 247B3, 247B, 242B, 232B, 226B3, 226B, 216B, 216B3
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303.5 Clamp

Clamp

  • Part #: 1541824
  • Weight: 0.10
  • Fits Machine(s): 216B, C1.5, C2.2, C1.6, CB-214D, CB-334E, CB-214E, CB-335D, CB-334D, CB-14, C1.1, 902, 304.5, 303.5, 3024C, 3024, 302.5, 3014, 3013C, 3013, 3011C, 247B, 242B, 232B, 216
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303.5 Complete Cab with Interior

Complete Cab with Interior

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Complete Engine

Complete Engine

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Complete Final Drive (Planetary/Travel) with Motor

Complete Final Drive (Planetary/Travel) with Motor

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Connector

Connector

  • Part #: 8T5400
  • Weight: 0.10
  • Fits Machine(s): 120M, 24H, 312C, 303.5, 302.5, 24M, 312D, 304.5, 302.5C, 301.6C, 301.5, 2484C, 160M 3, 2384C, 16M, 160M 2, 14M, 140M 3, 160M, 140M 3 AWD, 140M 2, 140M, 12M 3, 12M 3 AWD, 12M 2, 12M, 120M 2
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303.5 Counterweight

Counterweight

  • Fits Machine(s): 303.5
  • Category(s): Other
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303.5 Coupler

Coupler

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Crankshaft

Crankshaft

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Cutting Edge

Cutting Edge

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Cylinder Head

Cylinder Head

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Cylinder Packing Kits

Cylinder Packing Kits

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Cylinders
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303.5 Decal Set

Decal Set

  • Fits Machine(s): 303.5
  • Category(s): Other
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303.5 Digging Bucket

Digging Bucket

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Ditching Bucket

Ditching Bucket

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Drive Motor ONLY

Drive Motor ONLY

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Element

Element

  • Part #: 6I2500
  • Weight: 1.60
  • Fits Machine(s): 302.5, CB-334E, CB-335D, CB-34, CB32B, CC24B, CB22B, CB24B, CB-214E, CB-334D, CB-214D, CB-22, 903C, 902C, 901C, 305D CR, 304D CR, 304C CR, 303E CR, 303C CR, 303.5D, 303.5, 303.5C
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303.5 Engine Hood

Engine Hood

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Filter

Filter

  • Part #: 1466388
  • Weight: 0.10
  • Fits Machine(s): 302.5, 304.5, 303.5, 301.5
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303.5 Filter Gp

Filter Gp

  • Part #: 1449962
  • Weight: 1.00
  • Fits Machine(s): 216B, 302.5C, 302.7D, 303.5, 303.5C, 304, 304.5, 303E CR, 303.5E, 304C CR, 303C CR, 302.2D, 302.5, 301.7D CR, 301.7D, 302.4D, 301.6C, 301.5, 257B, 247B3, 247B, 242B, 232B, 226B3, 226B, 216B3, 216
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303.5 Final Drive (Planetary/Travel) without Motor

Final Drive (Planetary/Travel) without Motor

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Final Drive (planetary/travel Drive) without Motor

Final Drive (planetary/travel Drive) without Motor

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Final Drive Gearbox with Propel Motor

Final Drive Gearbox with Propel Motor

  • Part #: 163-9757
  • Weight: 101.00
  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Final Drive Gearbox with Propel Motor

Final Drive Gearbox with Propel Motor

  • Part #: 194-0856
  • Weight: 101.00
  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Floating Face Seal

Floating Face Seal

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Fly Wheel

Fly Wheel

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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*Sample Image Shown
303.5 G.e.t. Retainer

G.e.t. Retainer

  • Part #: 8E6209
  • Weight: 0.02
  • Fits Machine(s): 120H, 304, 304.5, 305E, 305.5E, 304E, 304D CR, 307C, 305C CR, 305, 304C CR, 303.5E, 303E CR, 303.5D, 303C CR, 303.5C, 303.5, 140M, 135H, 30/30, 120M, 120K, 120M 2, 120K 2, 120H NA, 120H ES
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303.5 Gear Pump

Gear Pump

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Pumps
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303.5 H-Link

H-Link

  • Fits Machine(s): 303.5
  • Category(s): Booms & Stick Components
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303.5 Hardware

Hardware

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Hydraulic Kit

Hydraulic Kit

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Hydraulic Oil Cooler

Hydraulic Oil Cooler

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Hydrostatic Pump

Hydrostatic Pump

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Pumps
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303.5 Idler Group

Idler Group

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Injector

Injector

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Long Block

Long Block

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Main Control Valve

Main Control Valve

  • Fits Machine(s): 303.5
  • Category(s): Other
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303.5 Main Hydraulic Pump

Main Hydraulic Pump

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Pumps
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303.5 Manifold

Manifold

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Master Link

Master Link

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Master Pin

Master Pin

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Motor Gp-e

Motor Gp-e

  • Part #: 1449966
  • Weight: 10.60
  • Fits Machine(s): 302.5, 303.5
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303.5 Muffler

Muffler

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Oil Pan

Oil Pan

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Overhaul Kit

Overhaul Kit

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Pilot Pump

Pilot Pump

  • Fits Machine(s): 303.5
  • Category(s): Hydraulic Pumps
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*Sample Image Shown
303.5 Pin, Lock

Pin, Lock

  • Part #: 8E6208
  • Weight: 0.09
  • Fits Machine(s): 120H, 304, 304D CR, 304.5, 305E, 305.5E, 304E, 307C, 305C CR, 305, 304C CR, 303E CR, 303C CR, 303.5D, 303.5E, 303.5C, 30/30, 303.5, 140M, 135H, 120M, 120K, 120M 2, 120K 2, 120H NA, 120H ES
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303.5 Pins

Pins

  • Fits Machine(s): 303.5
  • Category(s): Booms & Stick Components
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303.5 Planetary Gears

Planetary Gears

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 ROPS

ROPS

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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303.5 Radiator

Radiator

  • Part #: 163-9736
  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts, Radiators
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303.5 Recoil Spring Assembly

Recoil Spring Assembly

  • Part #: 172-2106
  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Ripper

Ripper

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Rockguard

Rockguard

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Roller

Roller

  • Part #: 266-8793
  • Weight: 13.00
  • Fits Machine(s): 303, 303.5, 302.5, 303.5D
  • Category(s): Undercarriages
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303.5 Sawhead

Sawhead

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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303.5 Seals

Seals

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 See Rubber Track Section

See Rubber Track Section

  • Part #: 153-5982
  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Shaft

Shaft

  • Fits Machine(s): 303.5
  • Category(s): Final Drives
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303.5 Short Block

Short Block

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Side Shield

Side Shield

  • Fits Machine(s): 303.5
  • Category(s): Other
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303.5 Sight Glass- Gauge Gp-sight

Sight Glass- Gauge Gp-sight

  • Part #: 3476081
  • Weight: 0.39
  • Fits Machine(s): 1190T, 303E CR, 304, 305.5E, 305.5, 304E, 304C CR, 304.5, 305C, 305.5D, 305, 304D CR, 303C CR, 303.5E, 303.5, 303.5D, 303.5C, 303, 2670C, 2590, 2570C, 2491, 2470C, 2391, 2390, 2290, 1390, 1290T
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303.5 Solenoid

Solenoid

  • Part #: 1568847
  • Weight: 0.75
  • Fits Machine(s): 302.5, 306, 305.5, 305, 304.5, 304, 303.5, 303, 301.5
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303.5 Sprocket

Sprocket

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Sprocket

Sprocket

  • Part #: 172-1965
  • Weight: 17.60
  • Fits Machine(s): 303.5
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303.5 Sprocket

Sprocket

  • Part #: 264-5371
  • Weight: 26.40
  • Fits Machine(s): 303.5
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303.5 Starter

Starter

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Stick / Dipper Arm

Stick / Dipper Arm

  • Fits Machine(s): 303.5
  • Category(s): Booms & Stick Components
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303.5 Strainer

Strainer

  • Part #: 5I4510
  • Weight: 0.20
  • Fits Machine(s): 304.5, 315C, E240C, E140, E110B, 320 L, 318C, E200B, E120B, 320N, 319C, 318B, 315B L, 317, 315B FM L, 315B, 313B, 315, 314C, 312C, 312B L, 312B, 312, 311B, 311, 308C, 307B, 307, 305, 303.5
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303.5 Swing Bearing / Turntable / Slewing Ring

Swing Bearing / Turntable / Slewing Ring

  • Fits Machine(s): 303.5
  • Category(s): Swing Machinery
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303.5 Swing Drive with Motor

Swing Drive with Motor

  • Fits Machine(s): 303.5
  • Category(s): Swing Machinery
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303.5 Swing Drive without Motor

Swing Drive without Motor

  • Fits Machine(s): 303.5
  • Category(s): Swing Machinery
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303.5 Swing Motor

Swing Motor

  • Fits Machine(s): 303.5
  • Category(s): Swing Machinery
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303.5 Switch Gp-start

Switch Gp-start

  • Part #: 1543197
  • Weight: 0.50
  • Fits Machine(s): 301.5, TH215, TH210, CD-54, CB-634D, CB-564D, CB-534D, CB-434D, CB-214D, 304.5, 302.5, 303.5
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303.5 Switch- Parking Brake-in Parking Brake

Switch- Parking Brake-in Parking Brake

  • Part #: 3T3132
  • Weight: 0.30
  • Fits Machine(s): 120G, 322B L, 320B L, 621E, 375, 350, 345B II, 330 L, 623E, 5080, 350 L, 345B L, 330B L, 325B L, 320B, 315, 320 L, 317, 312, 304.5, 302.5, 307, 303.5, 301.5, 16G, 160G, 14G, 140G, 130G, 12G
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303.5 Swivel Joint

Swivel Joint

  • Fits Machine(s): 303.5
  • Category(s): Swing Machinery
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303.5 Thrust Washer,

Thrust Washer,

  • Part #: 1541231
  • Weight: 0.08
  • Fits Machine(s): 216, CB-214D, CB-22, CB-334D, CB-334E, CB-214E, 902, 3024C, 304.5, 303.5, 3024, 302.5, 257B, 247B3, 247B, 242B, 232B, 226B3, 226B, 216B, 216B3
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303.5 Thumb

Thumb

  • Fits Machine(s): 303.5
  • Category(s): Attachments
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*Sample Image Shown
303.5 Tooth

Tooth

  • Part #: 1U-3202
  • Fits Machine(s): 120H, 303C CR, 304, 303.5E, 303E CR, 305C CR, 305, 304D CR, 304.5, 305E, 305.5E, 304E, 304C CR, 303.5D, 303.5, 303.5C, 212, 205, 206, 140M, 135H, 120M, 120K, 120M 2, 120K 2, 120H NA, 120H ES
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303.5 Top Roller

Top Roller

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Top Roller

Top Roller

  • Part #: 146-6064
  • Weight: 7.30
  • Fits Machine(s): 302.5, 303.5, 302.5C
  • Category(s): Undercarriages
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303.5 Track Adjuster Assembly

Track Adjuster Assembly

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Track Adjuster Seal Kit

Track Adjuster Seal Kit

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Track Adjuster Yoke

Track Adjuster Yoke

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Track Chain / Rail

Track Chain / Rail

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Track Frame

Track Frame

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Track Grouser Pad / Shoe

Track Grouser Pad / Shoe

  • Fits Machine(s): 303.5
  • Category(s): Undercarriages
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303.5 Turbo Charger

Turbo Charger

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Water Pump

Water Pump

  • Fits Machine(s): 303.5
  • Category(s): Engines & Engine Parts
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303.5 Water Pump, Fits Engine Model: 3013, 3013c, 3014, 3024, 3024c, C1.5, C2.2

Water Pump, Fits Engine Model: 3013, 3013c, 3014, 3024, 3024c, C1.5, C2.2

  • Part #: 3110053
  • Weight: 3.80
  • Fits Machine(s): 303.5, CB-335D, CB-334E, CB-334D, CB-214D, 902, 304.5, 302.5
  • Category(s): Engines & Engine Parts
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303.5 Wiring Harness

Wiring Harness

  • Fits Machine(s): 303.5
  • Category(s): Cabs
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